One of my mates did it up in the cold country. he had a 10 degree bag that he basically climbed in and laid his seat back.. he said it was ok.. but he wasn't fooling anybody. he was al contorted and his only saving grace was he is only 5'4".
Actually tomorrow I am going to Sport chalet and buy a little 8x8 tent and give my 7x7 just to store his bag and a few personal in when we are up for a 4 dayer.

I never bring my tent... I take the back seat out... tumble the front seats forward, and sit in the back facing the rear of the jeep while using the back side of the front seats to lay against. Im 6'1" and it works just fine with a few blankets, wouldn't trade my short jeep for anything. And I think it was said earlier, rum helps alot.

The only time I slept in my TJ I was covered in mud, cold, and saoking wet from the pouring rain after finally giving up trying to get it unstuck at 4am. I was so exhausted I actually found it comfortable

I have slept in my YJ many times. I lay across the front seats with my feet down in the passengers side, and my back up against the driver's door. I sleep great in it and usually wake up better rested after a night in the jeep than in a regular bed.

You ponder this, but realize you must act quickly - much longer, and hypothermia will lull you into a false sense of warmth - which, at this point, you almost decide that fake warmth would be good enough.

I was waiting for my class to start today and i took my seat back and i got really comfy... turned my heater on...all of a sudden i hear a knocking on the window so i jumped up and it was the campus officer making sure everything was ok.. i found out my class finished 5 hours ago..im not complaining im 6"3 220lb and i was commfy LMAO